Originally Posted by
Prowler
...I just noticed that T-Mar did note three specific FW makes that this too was used for. I wonder if that's the full list. It may be just try and see what fits. As with many vintage bike tools.
No, it's not comprehensive. Those are three that immediately came to mind because I used to work with them fairly regularly. Other freewheels brands with left hand threaded large cogs included G. Caimi/Everest, Simplex and W.A. . There may be more. Don't consider it comprehensive.